The O'rourke Law Firm
“Interested in us, the lady was very kind and very honest, she helped us a lot, I recommend her to everyone here.”
Best Criminal Defense Lawyers in O'Fallon, MO
15 firms listed · 7 in O'Fallon · 2 open 24/7 · 4 open weekends · 11 rated 4.5+
Data verified October 21, 2026
Saint Thomas Legal
“They fast-tracked a request I had as I faced an unexpected and tight deadline, provided excellent advice, and were generous with their time — staying patient and sticking with me through the many questions I had.”
Suddarth & Koor
“Suddarth are highly recommend, I for sure thought I was going to prison for 4 years But they fought and kept showing the judge what I was doing to better myself and I got exactly what I was hoping for, this was also my 4th probation revocation hearing they are easy to work with and are at the top of my list and I've used over 10 criminal defense attorneys in my life and I recommend Suddarth and Koor”
Tim Lohmar Attorney at Law
“From the first meeting to the last he was attentive, understood the situation well, and worked well with the courts, other attorney, and his staff to expedite my requests and filings!”
Woodlawn Law Offices
“David Schmidt was very proficient and helpful in dealing with a sensitive matter for me.”
Chris Lozano, Attorney at Law
“He gets the job done, he is very honest, gets things done rapidly!”
The 15 firms listed for O'Fallon, MO defend criminal charges for people. What each states about the offenses it takes and the courts it appears in comes from its own website; ratings and quotes come from public reviews.
Area overview: O'Fallon, MO
7 of the 15 firms we list are based in O'Fallon; the other 8 serve O'Fallon from St. Charles (11 mi) and St. Peters (6 mi). The firms on this page are rated from 3.8 to 5.0 across 1,106 reviews; 6 have 50 or more reviews and 11 are rated 4.5 or higher. When clients rate these firms on specific qualities, they most often praise professionalism (100%), responsiveness (89%) and quality (86%). The topics that come up most in reviews of the firms on this page are "knowledge", "communication" and "results". 2 are open around the clock; 4 are open on Saturdays and 3 on Sundays. The practice areas the firms on this page list most often on their websites are traffic law (4), criminal defense (3), family law (3), personal injury (3) and drug crimes (2). 4 have a BBB rating of A or A+. 11 have ten or more years of experience, the longest 34 years. 2 offer urgent consultations and 5 offer a free initial consultation. We count these figures across the firms on this page; distances are straight-line, and hours and prices change, so confirm the details with the firm before you book a consultation.
Do any criminal law firms listed for O'Fallon offer free consultations?
5 of the 15 criminal defense firms here state that a first consultation carries no charge. Treat it as a chance to ask how your kind of charge is handled and who would cover your hearings. It is not the moment to describe the facts in detail to several firms in a row.
Douglas R. Smith, Attorney
“Smart lawyer who takes time with you and carefully thinks through all scenarios before advising.”
The Lampin Law Firm
“I have found that the Lampin Law Firm has given excellent legal advice to my family when it was needed.”
Weber Law Firm
“He is awesome, keeps you up to date & is very good at what he does!”
Byrnes Law Firm
“He will take the time to help you understand the situation and keep you informed every step of the way!”
Boehmer Law
“He has helped me out a lot over the years, and is the only one I'd have in my corner fighting for me.”
Bert Fulk, Attorney at Law
“If anyone needs a very good lawyer that is professional with very good rates, LOOK NO FURTHER!”
Douglas M Heagler Law Offices
“My whole Family uses Douglas law offices ,I guarantee you will not be disappointed it will be the best decision you'll ever make!”
Smith Law Offices
“Monica N Smith did awesome with our case, she was very professional and understanding about our situation and gave detail information about everything.”
McMillan Dodd Law Firm
“Laurie did a amazing Job for me and I so appreciate the work she put in to represent me and very pleased with her service !”
Why these companies made our list
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